1. A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below grade. The column bearing on this footing will impose a load of 180kips. Assuming the subsurface conditions...


1. A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below<br>grade. The column bearing on this footing will impose a load of 180kips. Assuming the<br>subsurface conditions shown below with groundwater 5ft below grade, Use<br>Schmertman's method to calculate the elastic settlement of the system 6 years after<br>construction is completed, provide a clear sketch and show units and state assumptions.<br>Oft<br>Sand<br>Ymoist = 120 pcf<br>Phi = 30deg<br>Es = 52 ksf<br>4ft<br>Loose Sand<br>5ft<br>Ymoist = 125 pcf<br>Yat = 145 pcf<br>Phi = 22deg<br>Es (above GW) = 30 ksf<br>Es (below GW) = 20 ksf<br>8ft<br>Dense Sand<br>Ysat = 155 pcf<br>Phi = 35deg<br>Es = 60 ksf<br>20ft<br>2. The foundation above is limited to a 1.5

Extracted text: 1. A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below grade. The column bearing on this footing will impose a load of 180kips. Assuming the subsurface conditions shown below with groundwater 5ft below grade, Use Schmertman's method to calculate the elastic settlement of the system 6 years after construction is completed, provide a clear sketch and show units and state assumptions. Oft Sand Ymoist = 120 pcf Phi = 30deg Es = 52 ksf 4ft Loose Sand 5ft Ymoist = 125 pcf Yat = 145 pcf Phi = 22deg Es (above GW) = 30 ksf Es (below GW) = 20 ksf 8ft Dense Sand Ysat = 155 pcf Phi = 35deg Es = 60 ksf 20ft 2. The foundation above is limited to a 1.5" settlement after 10 years, speak to whether the design is adequate and if not how can you adjust the project to meet this criteria.

Jun 11, 2022
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